First lady Jill Biden has tested positive for COVID-19, her spokeswoman said on Tuesday.

“After testing negative for COVID-19 on Monday during her regular testing cadence, the first lady began to develop cold-like symptoms late in the evening,” Elizabeth Alexander, Jill Biden’s communications director, said in a statement. “She tested negative again on a rapid antigen test, but a PCR test came back positive.”

The 71-year-old first lady, who is double vaccinated and twice boosted, is experiencing mild symptoms, Alexander said.

“She has been prescribed a course of Paxlovid and, following CDC guidance, will isolate from others for at least five days,” Alexander added.

First lady Jill Biden smiles as she is introduced